Metals
What a jewellery stamp is legally allowed to say in the United States, cited to the FTC Guides at 16 CFR Part 23 with section locators.
9 entries
All cited
SortedA–Z
| Name | Fineness (parts per 1,000) | Karat | US legal requirement | Tarnishes |
|---|---|---|---|---|
| Coin silver | 900 | — | The words "coin" or "coin silver" may not be used unless the article is at lea… | Yes |
 Gold electroplate | — | Plating at least 10K | Electroplated with gold or a gold alloy of not less than 10 karat fineness, of… | — |
 Gold filled | — | Plating at least 10K | A gold alloy of not less than 10 karat fineness, affixed to all significant su… | — |
 Gold plate / gold overlay / rolled gold plate | — | Plating at least 10K | A gold alloy of not less than 10 karat fineness, affixed mechanically to all s… | — |
 Palladium | 500 | — | Palladium is named as one of the six Platinum Group Metals in 16 CFR 23.6(a), … | — |
| Pewter | 900 | — | May be described or marked "Pewter" only if it consists of at least 900 parts … | Yes |
 Platinum | 950 | — | The word "Platinum" without qualification may not describe an article that is … | No |
 Sterling silver | 925 | — | The words "Sterling Silver", "Sterling" or the abbreviation "Ster." may not be… | Yes |
 Vermeil | — | Coating at least 10K | Requires a base of STERLING SILVER coated on all significant surfaces with gol… | Yes |
Showing all 9Every figure traces to a named source with a pinpoint locator. Values we could not source are left blank rather than estimated.